Originally Posted by Jim Hef
Yes, but that link doesn't suggest that TV broadcasts, as received through your STB, would have the cadence to trigger 72Hz mode.
movies and series content on television are film-sourced (a) 720p24 with repeat bits to create 720p60 output from the STB, or (b) 1080p24 interlaced into 1080i48, with repeat bits to provide 1080i60 output from the STB.
There is a very strong incentive for content providers, broadcasters, and cable companies to encode this way -- it saves bandwidth, allowing them to add more channels and services. Their encoders detect 24p and encode as 1080i60 with repeat bits as a means to save bandwidth.
Some encoders do a better job of 1080p24 detection as others. If one of your local broadcast affiliates is still using one of the oldest encoders, then it may not do a very good job of this (if it does it at all). Some television programs also mix video and film-sourced content, which can cause trouble for encoders and film detection in TVs. And there's always a good bit of video content in the form of commercials, forcing video processors to switch between video and film modes on the fly; some processors are able to switch modes faster than others.
Pioneer's PureCinema (1080p24 detection) is not infallible. If you use Advanced Mode, you'll see instances where the content temporarily switches from a film source to a video source, and the Pioneer remains locked in 72Hz mode. The current PureCinema implemention is an improvement over the previous generation, but it's still a significant step down from some third-party video processors ($$$$). Several of these products have a dedicated light for 24p detection, and you see it lit for most high-definition programs on CBS, NBC, HBO, Showtime, etc.